package com.android.hintview;
import android.content.Context;
import android.content.res.TypedArray;
import android.database.DataSetObserver;
import android.graphics.Color;
import android.graphics.drawable.GradientDrawable;
import android.os.Handler;
import android.os.Message;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Interpolator;
import android.widget.RelativeLayout;
import android.widget.Scroller;
import com.android.entity.Util;
import com.android.play.R;
import java.lang.ref.WeakReference;
import java.lang.reflect.Field;
import java.util.Timer;
import java.util.TimerTask;
/**
* 支持轮播和提示的的viewpager
*/
public class RollPagerView extends RelativeLayout implements OnPageChangeListener {
private ViewPager mViewPager;
private PagerAdapter mAdapter;
private long mRecentTouchTime;
//播放延迟
private int delay;
//hint位置
private int gravity;
//hint颜色
private int color;
//hint透明度
private int alpha;
private int paddingLeft;
private int paddingTop;
private int paddingRight;
private int paddingBottom;
private View mHintView;
private Timer timer;
public interface HintViewDelegate{
void setCurrentPosition(int position, HintView hintView);
void initView(int length, int gravity, HintView hintView);
}
private HintViewDelegate mHintViewDelegate = new HintViewDelegate() {
@Override
public void setCurrentPosition(int position,HintView hintView) {
if(hintView!=null)
hintView.setCurrent(position);
}
@Override
public void initView(int length, int gravity,HintView hintView) {
if (hintView!=null)
hintView.initView(length,gravity);
}
};
public RollPagerView(Context context){
this(context,null);
}
public RollPagerView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public RollPagerView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
initView(attrs);
}
/**
* 读取提示形式 和 提示位置 和 播放延迟
* @param attrs
*/
private void initView(AttributeSet attrs){
if(mViewPager!=null){
removeView(mViewPager);
}
TypedArray type = getContext().obtainStyledAttributes(attrs, R.styleable.RollViewPager);
gravity = type.getInteger(R.styleable.RollViewPager_rollviewpager_hint_gravity, 1);
delay = type.getInt(R.styleable.RollViewPager_rollviewpager_play_delay, 0);
color = type.getColor(R.styleable.RollViewPager_rollviewpager_hint_color, Color.BLACK);
alpha = type.getInt(R.styleable.RollViewPager_rollviewpager_hint_alpha, 0);
paddingLeft = (int) type.getDimension(R.styleable.RollViewPager_rollviewpager_hint_paddingLeft, 0);
paddingRight = (int) type.getDimension(R.styleable.RollViewPager_rollviewpager_hint_paddingRight, 0);
paddingTop = (int) type.getDimension(R.styleable.RollViewPager_rollviewpager_hint_paddingTop, 0);
paddingBottom = (int) type.getDimension(R.styleable.RollViewPager_rollviewpager_hint_paddingBottom, Util.dip2px(getContext(),4));
mViewPager = new ViewPager(getContext());
mViewPager.setId(R.id.viewpager_inner);
mViewPager.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
addView(mViewPager);
type.recycle();
initHint(new ColorPointHintView(getContext(),Color.parseColor("#E3AC42"),Color.parseColor("#88ffffff")));
}
private final static class TimeTaskHandler extends Handler{
private WeakReference<RollPagerView> mRollPagerViewWeakReference;
public TimeTaskHandler(RollPagerView rollPagerView) {
this.mRollPagerViewWeakReference = new WeakReference<>(rollPagerView);
}
@Override
public void handleMessage(Message msg) {
RollPagerView rollPagerView = mRollPagerViewWeakReference.get();
int cur = rollPagerView.getViewPager().getCurrentItem()+1;
if(cur>=rollPagerView.mAdapter.getCount()){
cur=0;
}
rollPagerView.getViewPager().setCurrentItem(cur);
rollPagerView.mHintViewDelegate.setCurrentPosition(cur, (HintView) rollPagerView.mHintView);
if (rollPagerView.mAdapter.getCount()<=1)rollPagerView.stopPlay();
}
}
private TimeTaskHandler mHandler = new TimeTaskHandler(this);
private static class WeakTimerTask extends TimerTask{
private WeakReference<RollPagerView> mRollPagerViewWeakReference;
public WeakTimerTask(RollPagerView mRollPagerView) {
this.mRollPagerViewWeakReference = new WeakReference<>(mRollPagerView);
}
@Override
public void run() {
RollPagerView rollPagerView = mRollPagerViewWeakReference.get();
if (rollPagerView!=null){
if(rollPagerView.isShown() && System.currentTimeMillis()-rollPagerView.mRecentTouchTime>rollPagerView.delay){
rollPagerView.mHandler.sendEmptyMessage(0);
}
}else{
cancel();
}
}
}
/**
* 开始播放
* 仅当view正在显示 且 触摸等待时间过后 播放
*/
private void startPlay(){
if(delay<=0||mAdapter==null||mAdapter.getCount()<=1){
return;
}
if (timer!=null){
timer.cancel();
}
timer = new Timer();
//用一个timer定时设置当前项为下一项
timer.schedule(new WeakTimerTask(this), delay, delay);
}
private void stopPlay(){
if (timer!=null){
timer.cancel();
timer = null;
}
}
public void setHintViewDelegate(HintViewDelegate delegate){
this.mHintViewDelegate = delegate;
}
private void initHint(HintView hintview){
if(mHintView!=null){
removeView(mHintView);
}
if(hintview == null||!(hintview instanceof HintView)){
return;
}
mHintView = (View) hintview;
loadHintView();
}
/**
* 加载hintview的容器
*/
private void loadHintView(){
addView(mHintView);
mHintView.setPadding(paddingLeft, paddingTop, paddingRight, paddingBottom);
LayoutParams lp = new LayoutParams(LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
lp.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
((View) mHintView).setLayoutParams(lp);
GradientDrawable gd = new GradientDrawable();
gd.setColor(color);
gd.setAlpha(alpha);
mHintView.setBackgroundDrawable(gd);
mHintViewDelegate.initView(mAdapter == null ? 0 : mAdapter.getCount(), gravity, (HintView) mHintView);
}
/**
* 设置viewager滑动动画持续时间
* @param during
*/
public void setAnimationDurtion(final int during){
try {
// viePager平移动画事件
Field mField = ViewPager.class.getDeclaredField("mScroller");
mField.setAccessible(true);
Scroller mScroller = new Scroller(getContext(),
// 动画效果与ViewPager的一致
new Interpolator() {
public float getInterpolation(float t) {
t -= 1.0f;
return t * t * t * t * t + 1.0f;
}
}) {
@Override
public void startScroll(int startX, int startY, int dx,
int dy, int duration) {
// 如果手工滚动,则加速滚动
if (System.currentTimeMillis() - mRecentTouchTime > delay) {
duration = during;
} else {
duration /= 2;
}
super.startScroll(startX, startY, dx, dy, duration);
}
@Override
public void startScroll(int startX, int startY, int dx,
int dy) {
super.startScroll(startX, startY, dx, dy,during);
}
};
mField.set(mViewPager, mScroller);
} catch (NoSuchFieldException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
}
public void setPlayDelay(int delay){
this.delay = delay;
startPlay();
}
public void pause(){
stopPlay();
}
public void resume(){
startPlay();
}
public boolean isPlaying(){
return timer!=null;
}
/**
* 设置提示view的位置
*
*/
public void setHintPadding(int left,int top,int right,int bottom){
paddingLeft = left;
paddingTop = top;
paddingRight = right;
paddingBottom = bottom;
mHintView.setPadding(paddingLeft, paddingTop, paddingRight, paddingBottom);
}
/**
* 设置提示view的透明度
* @param alpha 0为全透明 255为实心
*/
public void setHintAlpha(int alpha){
this.alpha = alpha;
initHint((HintView)mHintView);
}
/**
* 支持自定义hintview
* 只需new一个实现HintView的View传进来
* 会自动将你的view添加到本View里面。重新设置LayoutParams。
* @param hintview
*/
public void setHintView(HintView hintview){
if (mHintView != null) {
removeView(mHintView);
}
this.mHintView = (View) hintview;
if (hintview!=null&&hintview instanceof View){
initHint(hintview);
}
}
/**
* 取真正的Viewpager
* @return
*/
public ViewPager getViewPager() {
return mViewPager;
}
/**
* 设置Adapter
* @param adapter
*/
public void setAdapter(PagerAdapter adapter){
mViewPager.setAdapter(adapter);
mViewPager.addOnPageChangeListener(this);
mAdapter = adapter;
dataSetChanged();
adapter.registerDataSetObserver(new JPagerObserver());
}
/**
* 用来实现adapter的notifyDataSetChanged通知HintView变化
*/
private class JPagerObserver extends DataSetObserver {
@Override
public void onChanged() {
dataSetChanged();
}
@Override
public void onInvalidated() {
dataSetChanged();
}
}
private void dataSetChanged(){
if(mHintView!=null)
mHintViewDelegate.initView(mAdapter.getCount(), gravity, (HintView) mHintView);
startPlay();
}
/**
* 为了实现触摸时和过后一定时间内不滑动
* @param ev
* @return
*/
@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
mRecentTouchTime = System.currentTimeMillis();
return super.dispatchTouchEvent(ev);
}
@Override
public void onPageScrollStateChanged(int arg0) {
// TODO Auto-generated method stub
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
// TODO Auto-generated method stub
}
@Override
public void onPageSelected(int arg0) {
Log.i("fenghaitao", "onPageSelected");
mHintViewDelegate.setCurrentPosition(arg0, (HintView) mHintView);
}
}